Mercurial > hg > truffle
comparison src/cpu/x86/vm/c1_MacroAssembler_x86.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
---|---|
date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | dc7f315e41f7 |
comparison
equal
deleted
inserted
replaced
-1:000000000000 | 0:a61af66fc99e |
---|---|
1 /* | |
2 * Copyright 1999-2005 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 // C1_MacroAssembler contains high-level macros for C1 | |
26 | |
27 private: | |
28 int _rsp_offset; // track rsp changes | |
29 // initialization | |
30 void pd_init() { _rsp_offset = 0; } | |
31 | |
32 public: | |
33 void try_allocate( | |
34 Register obj, // result: pointer to object after successful allocation | |
35 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise | |
36 int con_size_in_bytes, // object size in bytes if known at compile time | |
37 Register t1, // temp register | |
38 Register t2, // temp register | |
39 Label& slow_case // continuation point if fast allocation fails | |
40 ); | |
41 | |
42 void initialize_header(Register obj, Register klass, Register len, Register t1, Register t2); | |
43 void initialize_body(Register obj, Register len_in_bytes, int hdr_size_in_bytes, Register t1); | |
44 | |
45 // locking | |
46 // hdr : must be rax, contents destroyed | |
47 // obj : must point to the object to lock, contents preserved | |
48 // disp_hdr: must point to the displaced header location, contents preserved | |
49 // scratch : scratch register, contents destroyed | |
50 // returns code offset at which to add null check debug information | |
51 int lock_object (Register swap, Register obj, Register disp_hdr, Register scratch, Label& slow_case); | |
52 | |
53 // unlocking | |
54 // hdr : contents destroyed | |
55 // obj : must point to the object to lock, contents preserved | |
56 // disp_hdr: must be eax & must point to the displaced header location, contents destroyed | |
57 void unlock_object(Register swap, Register obj, Register lock, Label& slow_case); | |
58 | |
59 void initialize_object( | |
60 Register obj, // result: pointer to object after successful allocation | |
61 Register klass, // object klass | |
62 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise | |
63 int con_size_in_bytes, // object size in bytes if known at compile time | |
64 Register t1, // temp register | |
65 Register t2 // temp register | |
66 ); | |
67 | |
68 // allocation of fixed-size objects | |
69 // (can also be used to allocate fixed-size arrays, by setting | |
70 // hdr_size correctly and storing the array length afterwards) | |
71 // obj : must be rax, will contain pointer to allocated object | |
72 // t1, t2 : scratch registers - contents destroyed | |
73 // header_size: size of object header in words | |
74 // object_size: total size of object in words | |
75 // slow_case : exit to slow case implementation if fast allocation fails | |
76 void allocate_object(Register obj, Register t1, Register t2, int header_size, int object_size, Register klass, Label& slow_case); | |
77 | |
78 enum { | |
79 max_array_allocation_length = 0x00FFFFFF | |
80 }; | |
81 | |
82 // allocation of arrays | |
83 // obj : must be rax, will contain pointer to allocated object | |
84 // len : array length in number of elements | |
85 // t : scratch register - contents destroyed | |
86 // header_size: size of object header in words | |
87 // f : element scale factor | |
88 // slow_case : exit to slow case implementation if fast allocation fails | |
89 void allocate_array(Register obj, Register len, Register t, Register t2, int header_size, Address::ScaleFactor f, Register klass, Label& slow_case); | |
90 | |
91 int rsp_offset() const { return _rsp_offset; } | |
92 void set_rsp_offset(int n) { _rsp_offset = n; } | |
93 | |
94 // Note: NEVER push values directly, but only through following push_xxx functions; | |
95 // This helps us to track the rsp changes compared to the entry rsp (->_rsp_offset) | |
96 | |
97 void push_jint (jint i) { _rsp_offset++; pushl(i); } | |
98 void push_oop (jobject o) { _rsp_offset++; pushoop(o); } | |
99 void push_addr (Address a) { _rsp_offset++; pushl(a); } | |
100 void push_reg (Register r) { _rsp_offset++; pushl(r); } | |
101 void pop (Register r) { _rsp_offset--; popl (r); assert(_rsp_offset >= 0, "stack offset underflow"); } | |
102 | |
103 void dec_stack (int nof_words) { | |
104 _rsp_offset -= nof_words; | |
105 assert(_rsp_offset >= 0, "stack offset underflow"); | |
106 addl(rsp, wordSize * nof_words); | |
107 } | |
108 | |
109 void dec_stack_after_call (int nof_words) { | |
110 _rsp_offset -= nof_words; | |
111 assert(_rsp_offset >= 0, "stack offset underflow"); | |
112 } | |
113 | |
114 void invalidate_registers(bool inv_rax, bool inv_rbx, bool inv_rcx, bool inv_rdx, bool inv_rsi, bool inv_rdi) PRODUCT_RETURN; |